#043D76
Closest named color: Twilight Blue (#0A437A). oklch(36.2% 0.112 254.1), rgb(4, 61, 118).
Aa
White text reads best on this color (10.85:1).
About this color
#043D76 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.112 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.019 away. White text reads best on it, at 10.85:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.93:1 |
| White text | 10.85:1 |
Values
| HEX | #043D76 |
| RGB | rgb(4, 61, 118) |
| HSL | hsl(210, 93%, 24%) |
| OKLCH | oklch(36.2% 0.112 254.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #043D76 | 10.85:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #043D76 | 1.93:1 | Fails | Lc 9.3 | Not readable |
| #043D76 text on white | 10.85:1 | AAA | Lc 94.6 | Preferred for body text |
| #043D76 text on black | 1.93:1 | Fails | Lc -8.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9BC4F6
oklch(80.9% 0.084 253.7)
-
Step 400
400
#62A3F2
oklch(70.6% 0.134 254.3)
-
Step 500
500
#308AED
oklch(63.1% 0.171 253.9)
-
Step 600
600
#0072D7
oklch(55.6% 0.177 254)
-
Step 700
700
#005FB6
oklch(49% 0.157 254.2)
-
Step 800
800
#004E97
oklch(42.8% 0.136 254.1)
-
Step 900
900 (this color)
#043D76
oklch(36.2% 0.112 254.1)
-
Step 950
950
#092748
oklch(27.1% 0.071 253.7)
#043D76 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #1D4278 | 0.024 |
| Deuteranopia (no green cones) | #003975 | 0.013 |
| Tritanopia (no blue cones) | #004B53 | 0.084 |
| Achromatopsia (no color) | #3D3D3D | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043D76
#043D76
oklch(36.2% 0.112 254.1)
- #553600
#553600
oklch(36.1% 0.077 73.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #043D76, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.019
- Marine Blue #01386A ΔE 0.025
- Prussian Blue #1D3557 ΔE 0.056
- Cobalt #1E488F ΔE 0.056
- Marine #042E60 ΔE 0.057
- Light Navy #155084 ΔE 0.062
- Dark Grey Blue #29465B ΔE 0.066
- Deep Sea Blue #015482 ΔE 0.070
Use #043D76 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.